Ink-pencil.



J. WALLACE.

INK PENCIL. PPLImTIoN FILED, mums, 1910. msmwnn neo. 1s, 191s.

1,085,7'14, I Patented Feb. 3, 1914 ahw/Moz JOSEPH WALLACE, F CHICAGO,ILLINOIS.

` INK-PENCIL.

specification of Letters Patent.

Patented Feb. 3,1914.

Application Ied J'une18,.1910, Se1'ia1.Nm.567-,562..IRenewedflllecember18,-1913..-Seria1-N0.' 802,565.

To all 'whom it may concern citizen of, lthe United States'of-.'America,. re-

sidingat Chicago, in the county of'Cookand State-of Illinois5.haveinvented Inew and useful lImprovements in v{Ink Pencils, fofVWhich-.the following is a specification.

The. invention relates tol an improvement in ink pencils,beingfmore-particularlyI di rected to a means Wherebyi-the' airysupplyf to-inducertheready'riiowfl of the Writing fluid-maybe yrenderedfmorecertain,\.andthe -varlous parts arranged to -sprovide for such@ airsupply orL vent readily separable to: permit their convenient cleaning.

' The mainobject of: the present invention is the provision: of .meansfor venting or- .supplying air to.- the interior of the Pencil to-induce a proper floW'of-.the Writing fluid,A

said. means beingv so constructed-asta be readily separable for cleaningand so: ar, lranged in the .completed structure. as to afford aneven,steady flow of th'eiuid when .the pencil is; inuse, and adaptingthe closing cap for direct engagement with the bar- -reland Whollyfree'ot contact vvvith the con;

- inthe operation of thecap.

-nection for the. venting means whereby. toJ

avoid accidental disconnection of such means The invention in itspreferred details of construction will be described inthe A-follovvingspecification, reference beingv had -particularly to the accompanyingdrawings, in

Figure 1 is a longitudinal section through an ink pencil constructed inaccordance with insection, of the completed pen. ig. 5 1s a fragmentarysectionypartly in eleva-f1 -my invention.

Fig. 2 is a transversef'sec-- tionon the line 2--2 of Fig.` l. Fig. 3is; a perspective -view of the pin -carrien and pin. Fig. 4 is a view inelevation, artly.

tion, of the upper or handle end of the pen. Fig. 6 is afragmentary.longitudinal.'sec. tion, partly in elevation, illustrating'a modied construction of-the` air: supply means. Fig. 7 is a similarvieW showing a different form. y

Referring particularly to the accompany- *l ing drawing, the improvedinkpencil or.-

stylographic pen comprises abarrel 1` interiorly threaded at one end{for-fthe recep-z tion of the pointpiece or member 2,.-Which pointpiece'is of the usual .construction lhavdisconnecting the parts. lBeyond :therough- .Yened-portionrthe pointpiece is circumferen l. tiallyreduced to `provide for ythe lreception 'of aclosing cap 4, andlbeyondthe reduced portion tapers to the usual Writingk point.

form illustrated in Figs. 1 and 4,. circumferforthe reception of the capWhile the, pen 'is in use; The extension 5 is. interiorly :threaded toreceive the exteriorly: threaded lend, of a holdingsleeve 6. The.opposite .end of. the sleeve 6 is interiorly threaded to formed Withyaninwardly extending tubelike section 8,:the bore of which opens throughthe cap to provide for the entrance of air tothe interior. Thersection 8has a diameter materially less than the .interior diameter ofthe cap,thereby provi ing an annular chamber 9. in .the `cap and s`unrnnd iingthe v1tube section Stfor a purpose which will presently gappear.Immediately adjacent its juncture with the extension 5 on the. barrel`vthe -sleeve .member 6 is formed l with a transverse .partition 10having acentral .openin 11 indirect alinement with and corresponding tothe opening of the tube4 section 8.

:An airtube- 12 is provided comprising a suitable lengthz of a.tube-like section having; anezrterior diameter corresponding to theinterior diameter' of the. opening 11,in, the partition I 10, whereby-said ,air tube/may` be frictiona-lly held .Within said .-openfingf andthus in alinement.. withA though spaced from .the tube section 8 of thevent cap. That 6 is provided with a lremovable closing section 13,z alsoa tube-like member having an exteriordiameter corresponding totheinterior diameter of theair tube'12, so that the closin section may beremovably infrictionallyff-held thereinagainst displace-4 ment duringuse. The outer or=free end of 4the' Asection 13 is closed, the circularWall of --said section,: preferably adjacent the closed :The opposingend of thebarrel is, inthe entially-reduced to) provide, an fextension 5receive a-vent cap 7 which cap is centrally lend-fy of the air tuberemotefrom ythe sleeve serted wit in the end of the air tube and end, isformed with one or more vent open- I 2 is what I term apin carrier,comprisingl spaced sections 15 and 16 conformlng. on

upper end of the point pice.

ings 14.

Slidably mounted within the point piecetheir outer surfaces to thecurvature of the lower-ends thev sections and 16 of the carrier areconnected by a transverse bridge plate 17 centrally formed with anopening 18 having a diameter exceeding that of the air tube. The usualclosing 1n 19 is provided, forming the terminal o? a spring section 20preferably constructed of convolutions having gradually decreasingdiameters toward the pin. The spring section, at its upper end, issecuredwithin the opening 18 of the carrier, whereby the life of thispart of the pen is materially increased through the manner of'connecting the spring and carrier, while at the same time the flow ofink from the barrel is, .through the carrier, in a direct line with thewriting point, whereby the feed is of the direct gravity type throughoutthe length of the carrier throughout the length ofthe spring.

With the partsassembled for use it will be noted that the free en d ofthe closing section of the air tube terminates immediately. above theopening 18 of the carrier, whereby all interference lwith the flowof inkthrough the opening 18 and. through the spring is lavoided. Furthermore,there is formed between the upper end of air tube and the lower end ofthe tube section 8 of the Vent cap a chamber into which an ink which mayfind its way into the airtu e on the inversion of the pencil will becaught. This will tend in a measure to free the air tube and tube'section 8 ofthe vent cap of any possibility of clogging. The importantfeature, however, in connection with the invention is the arrangement ofparts for convenient separation to permit. their ready cleansing in theevent of clogging. For example, the removal of. the vent cap 7 providescomplete access to the interior of the sleeve 6, and the separation ofthis sleeve from the valvev drawing with it theair tube 12 providesaccess to these parts. Upon the nemoval of the closing section 13 oftheair tube an unrestricted passage is provided which may be readily andconveniently cleansed in a simple and expeditious manner, as for exampleby forcing water through the same. It being appreciated .that Ait isthrough the clogging of the air supply that stylographic pens andsimilar automatic ink A t their feeding writers are renderedinoperative,l

apparent. kThis object is readily attained byuthe construction describedand in a manner to avoid complication and without .in creasing the costof construction. It will be further noted that the closing cap 4directly engages the barrel while at the sametimeeinclosing the holdingsleeve6 and vent. cap 7, the closing cap being wholly free ofconnection' with the holding sleeve and vent capV to avoid accidentalmovement of these parts in the separation of the cap from the barrel.

'In Fig'. 5, I have shown a construction identical with that describedin connection with Fig. 1 except that in thisinstance the upper end ofthe sleeve section 6 is circumferentially reduced, as at 21 to receivethe v cap 4, and that portion of'the sleeve intermediate the cap vandbarrel i's peripherally roughened, as at 22, for convenience inconnecting or separating the parts.

Fig. 6 discloses a construction identical with that in IFig. 5 exceptthat the sleeve section 6 is arranged for exterior connection with thebarrel, as at- 23, instead of having Ainterior connection therewith, asin the preferred form. 'I

In Fig.. 7, I have shown the air tube holding artition, as 24,corresponding to thev partition 10 in the preferred form as integralwith the barrel, and formed to prevent .the cap 25 integral with and asa part of a sleeve member 26 arranged for exterior threaded connectionwith the.barrel immediately adjacent the partition 24.

' In all these forms provision is made beyond the air tube, fas by anenlarged chamber or the like for the reception of any .ink which mayfind itsway into the air tube, which chamber is, ofco'urse,closedjagainst the ink receiving space of the barrel exceptthrough the air tube. Furthermore, in all the vforms the vent cap isseparable from the barrel or from the contiguous part of .the pen andthe air tube separable from the barrel and the 4l'atter is provided witha removable closing section, so that all parts which may posslbly beclogged with the ink,

and. which through such clogging would render thepen inoperative, may beconveniently reached for cleansing. It will lbe further noted .that thecarrier is freely slidable lengthwise the point piece, whereby saidcarrier may be operated to project the pin a greater or less distancebeyond the writing end of the point piece in order to clear the pin ofany fiber or'the like taken up in writing, or to .adjust said pin tocompensate for wear thereon.

Having .thus described the invention, what A stylographic pen includinga barrel, a

point piece connected therewith :1t-one end 4of the barrel, a holdingsleeve removably sleeve and extending engthwise the barrel, In testimonwheredf I ax my signature alvent ap Secfured t) thelxoldllig svesaic" inpresence o two witnesses. s eeve elng orme Wit a c am r c ose Vby thevent 4cap, and a pen closing cap def JOSEPH WALLACE 6 signed to inclosebut free of Contact with the Witnesses holding sleeve and vent cap, saidclosing c'ap D. W. GOULD, directly engaging the barrel. BENNE'IT S. Jomas.f

